SU1571227A1 - Depth indicator - Google Patents

Abstract

This invention relates to well testing. The goal is enhanced functionality. The depth gauge contains an electrode 1, made in the form of a permanent magnet, an aluminum electrode 2, inside of which there is a reed switch 3. Electrodes 1.2 are connected by a membrane. The depth gauge has a generator 8, the amplifier-driver 9, the key 11, the counters 10, 12 depth. A probe from the electrodes 1.2 is lowered into the well. The key 11 is open, the counter 12 records the current depth of the lowering of the probe. When the electrodes reach 1.2 the surface of the liquid, a pulse is generated as a result of the electrochemical processes. The latter closes key 11. Counter 12 stops operation, counter 10 continues counting the depth. After reaching the bottom of the well, the electrode 1 is lowered under the force of gravity, the reed switch is triggered 3. The generator 8 is stopped and the depth is counted on the counter 10. Using a depth gauge allows the probe to measure the depth of the well and the level of the fluid in one descent-lift. 1 hp f-ly, 2 ill.

Description

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The invention is intended to determine the level of fluid in a well, as well as its depth, and can be used in the mining industry for drilling and blasting, for determining the level of residual fluid in wells, as well as in construction.

The purpose of the invention is to expand the functionality and simplify the design.

Fig. 1 shows the design of a probe that is lowered into the well and an electrical circuit for switching on electrodes 5 and a reed switch; Fig. 2 is an electrical measuring circuit of a depth gauge.

The depth gauge includes a probe consisting of two electrodes, having different values of normal potentials — an iron electrode 1, which is simultaneously a permanent magnet, and an aluminum electrode 2, inside of which is a reed switch 3. Electrodes 1 and 2 25 are connected to each other by an elastic membrane 4 made of electrically insulating material (for example, rubber). The reed switch is connected with the help of conductor 5 to the aluminum electrode 2, and with the help of conductor 30 6 to the iron electrode 1. A contact pair of conductors 7 is connected to the generator input of 8 rectangular pulses and the amplifier-driver 9 electrical impulses. The output 35 of the generator of 8 rectangular pulses is connected by the first counter 10 of the depth of the well and the input of the electronic switch 11. The output of the amplifier 9 is connected to the control input 40 of the electronic switch 11, the output of which is connected to the second counter 12 of the depth of the well.

The device works as follows .45

During the depth measurement process, a measuring probe is lowered into the well. At the same time, the generator of 8 rectangular pulses continuously generates pulses that pass through the open electronic key 1I and are converted to the depth of the probe's descent (in meters on the second counter 12, the first counter 10 of the depth gives the same readings. When the probe reaches the surface of the liquid, as a result of electrochemical processes occurring in an electroplating element, aluminum (its normal potential is 1.6 V) is a liquid that is always richly mineralized as a result of dissolution of various salts during drilling and wells - iron (its normal potential - 0.4 volts, an electrical pulse is generated in the quantity of 0.8-1.0 when measured magnetoelectric device system.

This pulse is amplified in the driver amplifier 9 and formed into a control pulse, which closes the electronic key 11. The second pulse counter 12 stops counting, and its readings correspond to the depth of the unfilled portion of the well. As the probe is lowered in fluid, the first counter 10 continues to read the depth. When the probe is lowered to the bottom of the well, the electrode magnet 1 under the influence of gravity, overcoming the resistance of the elastic membrane 4, is lowered. As a result, the reed switch is triggered. At the same time, the input of the pulse generator 8 is shorted and the depth reading is stopped at the first counter 10, which records the total depth of the well.

The device uses a two-channel circuit - the operation of one channel is controlled by an electrochemical electrode cell, and the other channel is a combination of a magnetic (iron) electrode 1 and a nonmagnetic electrode 2, in the case of which the reed switch 3 is placed,

The proposed depth gauge makes it possible to measure with sufficient accuracy the degree of watering of the explosive wells, which makes it possible to save the consumption of a waterproof explosive.

Claims (2)

1. A depth gauge comprising a generator of rectangular pulses, the first output of which is connected to the first depth counter, an amplifier driver, an electronic switch and a second counter, a depth that is characterized by the fact that, in order to expand its functionality, it is equipped with a measuring probe the form of a reed switch and two metal electrodes connected by a membrane with different values of normal potentials, contact wires, the reed switch is connected in parallel to the electrodes, the outputs of which are connected by contact wires to the inputs of the amplifier-former and the generator of rectangular pulses, the second output of which is connected to the input of the electronic key-, the control input of which is connected to the output amplifier-former, and the output is connected to the second depth counter, 2. The depth gauge in accordance with claim 1, 1, and the fact that, in order to simplify the design, one of the electrodes is made in the form of a constant magnet. 1